Test2 Math 224 NC A&T; State Umiversity, Spring 2018 Show all work to recieve fu

Question

Test2 Math 224 NC A&T; State Umiversity, Spring 2018 Show all work to recieve full credit probability /YA or B) ifPCA)-0.37, P(B)" 0.56 and PA and B)-0.35. population projection for 2018 in the 50 states and DC are grouped in the following frequency table. Population0-3 0-3 3-6 69-12 1215 15-18 18-21 21 or more Total 10 16 6 No of states 7 50 End point convention: lower point is included, upper is not.) If one state is selected at random, what is the probability that the population prediction is: (A) Under 9? (B) Under 15 but not under 6? (C) 18 or over? 3. Answer True of False. Given two events, 4 and B, the revised probability of A ifit is known that B has occurred is called the conditional probability of A given B The possible outcome of selecting a sample of three (3) letters from the five letters A, B, C, D, E are ABC, ABD, ABE, ACD, ACE, ADE, BCD, BCE, BDE, CDE Determine the probabilty that either B or D is included in the sample 4.

Explanation / Answer

2)A)P(under 9) =(7+10+16)/50 =0.66

b)P(under 15 but not under 6) =(16+6+4)/50 =0.52

c)P(18 or over) =(2+2)/50=0.08

3)

True

4)

as one sample out of 10 ; ACE does not cotain B and Dl;

hence probaility that either B or D included =9/10 =0.9

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